The Ministry of Justice will begin to end the lease on HMP Dartmoor.
The site has a ten-year lease notice period but the MoJ said the age and limitations of the prison mean that it does not have a long-term future in a modern, cost-effective prison system.
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It will be a dry start to the day with sunny spells. However, thicker cloud and rain will arrive from the west during the afternoon.
Most areas will have a dry morning with some bright spells.
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